FVXX22 KWBC 201401 VOLCANIC ASH ADVISORY ISSUED: 2003JUN20/1245Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/170 INFORMATION SOURCE: DMSP F-15 THERMAL FINE IMAGE. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 20/0602Z OBS ASH CLOUD: SFC/FL080 10 NM WIDE LINE OF ASH LOCATED BETWEEN N1621E14540 TO N1610E14501 OR 35 NM WEST OF SUMMIT. ASH IS MOVING W 10 - 15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: DMSP F-15 THERMAL FINE IMAGERY SHOWS AN ASH PLUME EXTENDING 35 NM WEST OF SUMMIT. ASH PLUME IS VERY THIN. ARCHULETTA/KRAMER NEXT ADVISORY: WILL BE ISSUED BY 2003JUN20/1845Z. NNNN